Determination of Hysteresis Controller Band for IPMSM-Based Drive System

a technology of hysteresis controller and drive system, which is applied in the direction of electronic commutation motor control, motor/generator/converter stopper, dynamo-electric converter control, etc., can solve the problems of affecting performance, generally not achievable, and complex structure of the oc system
US20140375237A1Inactive Publication Date: 2014-12-25FORD GLOBAL TECH LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
FORD GLOBAL TECH LLC
Publication Date
2014-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods of providing a control band for a hysteresis controller are presented. A method can determine a control band analytically to avoid the time and costs associated with manual calibration of a hysteresis controller. By way of example, a method can include modeling a machine output, such as stator flux or machine torque, modeling the variation rate for the machine output, and providing a control band based on the variation rate modeling.
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Description

FIELD OF INVENTION

[0001] This invention relates generally to direct torque control (DTC) for an electric machine (IPMSM), and more particularly to a method for determining a DTC hysteresis controller band.BACKGROUND

[0002] The demand for electric and hybrid electric vehicles continues to grow as governmental agencies, private organizations and individual consumers strive to conserve resources, reduce energy costs and lower carbon emissions. Electrified vehicles have an electric drive system that includes an electrical machine to assist or replace the internal combustion engine of a conventional vehicle, a power conversion system configured to provide energy to the electric machine, and a machine controller configured to control machine operation. Due to its high power / torque density, its high efficiency, and its high reliability, a permanent magnet synchronous motor (PMSM) is a popular choice for electric vehicle drive systems. Most machine controllers used with PMSMs in electric vehic...

Claims

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